Tag communication device and information processing method

A tag communication device comprising:

• a communication device configured to wirelessly communicate with a plurality of wireless tags each storing an identification code including an existing common portion as at least a part of the common portion;
• one or more processors configured to:
• designate at least a part of the common portion as a mask pattern and cause the communication device to transmit a first command for notifying to select the wireless tag including the identification code, the identification code further including the corresponding mask pattern;
• cause the communication device to transmit a second command for requesting a response to the selected wireless tag;
• cause the communication device to transmit a third command for requesting rewriting of the identification code to one of the wireless tags that transmits data in response to receiving the data transmitted from the one wireless tag with respect to the second command by the communication device;
• and
• cause a repeat transmission of the second command, if a third command is being transmitted, until the third commands have been transmitted to each of a predetermined number of the wireless tags, or if the data transmitted from one of the wireless tags is not received by the communication device with respect to the transmission of the second command.